What Summit Professional Builders does

Summit Professional Builders, Inc. is a privately held custom construction company founded in 1999 and headquartered at 1010 Sir Francis Drake Boulevard in Kentfield, California (California contractor's license No. 789450). The firm serves high-net-worth homeowners across Marin County, the Napa Valley, San Francisco, and the broader Bay Area, executing new home construction, additions, alterations, historical restorations, and select commercial renovations. Its project portfolio includes multi-million-dollar residences on the order of 7,000 sq ft, frequently featuring wine cellars, pools, guest quarters, and custom architectural detailing, with completed work featured in regional press such as Marin magazine.

The firm operates with a sales-led, referral-driven go-to-market motion built on a 25-year reputation for hands-on management, financial transparency, and craftsmanship. Revenue is generated through one-time project fees for completed construction work, with each engagement structured around direct collaboration among the owner, architect, and Summit's in-house team of 20-25 construction professionals who perform all rough and finish carpentry — a structure the company cites as enabling greater quality and schedule control than subcontractor-reliant competitors. Summit bundles pre-construction services (site selection, permitting, budgeting, cost research, scheduling, risk management) into its offering and works with a curated network of trusted subcontractors, suppliers, and recurring architectural partners including Holder Design Associates, Wade Design Architects, Brooks McDonald Architecture, and Brockman Design Studio, among others. The company is founder-led by Gregg A. Foster and employs project managers, a project engineer, and an accounting function, with no external institutional ownership, funding history, or public-market presence.

Name

Summit Professional Builders

Legal name

Summit Professional Builders, Inc.

Website

https://spb-inc.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

11–50 employees

Short description

Summit Professional Builders is a custom residential and commercial construction company founded in 1999, serving high-end homeowners across Marin, Napa Valley, and San Francisco. The firm employs 20-25 in-house carpentry professionals delivering new construction, additions, historical restorations, and renovations.

Ownership category

akta.pro rank

Product category

Residential Construction Services

NAICS

New Single-Family Housing Construction (except For-Sale Builders) (236115), Residential Remodelers (236118), Residential Building Construction (2361)

SIC

General Bldg Contractors - Residential Bldgs (1520), Operative Builders (1531)

akta.pro primary industry

Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)

Keywords

• Custom home construction
• Residential renovations
• Historical restoration
• Commercial construction services
• Pre-construction planning

Headquarters

HQ city

Kentfield

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales

Revenue model

1. Custom Construction Services: Project-based custom construction services for residential new homes, additions, alterations, historical restorations, and commercial renovations throughout the Bay Area. Revenue is generated through one-time project fees for completed construction work.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Summit Professional Builders constructs custom new homes, additions, alterations, and historical restorations for high-end residential properties in Marin, Napa Valley, and San Francisco, and performs commercial renovations throughout the Bay Area. The company employs 20-25 in-house construction professionals for all rough and finish carpentry and provides pre-construction services including site selection, permitting, budgeting, and risk management.

Product overview

Summit Professional Builders is a construction services company offering a unified suite of services centered on residential and commercial construction. The core offerings include new home construction, additions, alterations, and historical restorations for residential properties, complemented by commercial renovations throughout the Bay Area. An integrated pre-construction services module provides site selection, permitting, budgeting, and risk management to support the construction services.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Construction Services New home construction, additions, alterations, and historical restorations for residential properties in Marin, Napa Valley, and San Francisco areas. Targeted at wealthy homeowners seeking high-quality custom residential construction for primary residences and vacation properties.
• Commercial Construction Services Commercial renovations throughout the Bay Area for commercial property owners seeking renovation and improvement services for their business properties.
• Pre-Construction Services Site selection, permitting, budgeting, cost-effective construction techniques research, accurate estimates, realistic schedules, and risk management assistance to support construction projects for property owners and developers.

Named customers5 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Seven partnerships are on record, tiered core and minor.

• Holder | Parlette ArchitectscoreStrategic or Co-development PartnerArchitectural design partner for the Grove | Sonoma project - a ground-up sanctuary built on a 23-acre ridge in the Sonoma hills. One of their most significant collaborations for high-end residential construction.
• Holder Design AssociatescoreStrategic or Co-development PartnerPrimary architectural design partner appearing on multiple major projects including Napa Valley Residence, Fir Hill, Finnell, and other projects. Collaborated on design, engineering, permitting for complete project development.
• Wade Design ArchitectscoreStrategic or Co-development PartnerArchitectural partner for West Nicasio project - a stunning property in San Geronimo Valley featured in Marin magazine October 2019 issue.
• Brooks McDonald ArchitectureminorStrategic or Co-development PartnerArchitectural partner for the Lagunitas | Ross project - first phase of a large full renovation including pool house construction.
• Brockman Design Studio (Peter Brockman)coreStrategic or Co-development PartnerArchitectural partner for Hidden Valley project in Sleepy Hollow, Marin County - collaborated with the family to create a modern, comfortable house for generations.
• Crome ArchitectureminorStrategic or Co-development PartnerCo-designer with Holder Design Associates on the Acorn | Kent Woodlands project - a house exploring the Bay First Tradition of Arts and Crafts architecture inspired by Greene and Greene, Ernest Coxhead, and Charles Keeler.
• Stiles Architecture with Alison PickartminorStrategic or Co-development PartnerArchitectural team for Laurel Grove | Kentfield project - elegant and stylish collaboration with construction team.

Scale indicators2 records

Recent moves2 records

Expansion highlights4 records

Direct peers

• Branagh Construction: Well-established Bay Area custom homebuilder and remodeler serving similar high-end residential clients in Marin, Napa, and San Francisco counties with comparable in-house carpentry and design-build capabilities.
• Blach Construction: Silicon Valley-based general contractor performing both commercial building and high-end residential/interior work for premium Bay Area clients, overlapping with Summit on the commercial renovation and custom residential side.
• Herrero & Sons Construction: Bay Area family-owned custom residential builder specializing in high-end new homes, additions, and renovations in Marin and San Francisco—near-perfect overlap with Summit's service offering and geography.
• Marini Construction: Bay Area custom homebuilder and remodeler serving Marin, San Francisco, and Peninsula with full custom residential and small commercial capabilities comparable to Summit's portfolio.
• Kitchell Custom Builders: Northern California custom homebuilder focused on architect-driven luxury residences, with similar design-build workflows, in-house carpentry emphasis, and project-based execution model.
• Truebeck Construction: Bay Area design-build firm specializing in high-end custom residential and select commercial projects for discerning clients—comparable in approach, market segment, and reliance on architect partnerships.

Broad incumbents

• Swinerton Builders: Major West Coast general contractor with broad commercial and high-end residential capabilities across the Bay Area; competes with Summit in the custom residential and commercial renovation space but at significantly larger scale and broader scope.
• Toll Brothers: National luxury homebuilder serving premium move-up and luxury segments across the U.S.; broadly comparable in targeting affluent buyers but operates at vastly larger scale and as a production builder rather than custom.

Regional players

• Plant Construction Company: Bay Area general contractor specializing in commercial construction, tenant improvements, and renovations across San Francisco—overlap is primarily on the commercial renovation side of Summit's business.
• Carmel Builders: Northern California custom homebuilder active in coastal luxury markets; comparable in custom residential focus but primarily serves Monterey Peninsula rather than the Bay Area, making it more of a regional adjacent peer.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Instagraminstagram.com/summit_professional_builders

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Summit Professional Builders